Spray-header for boilers.



H. D. KELLY.

SPRAY HEADER FOR BOILERS.

APPLICATION FILED JUNE 4, 1913.

1,087,242. Patented Feb. 17, 914.

HENRY D. KELLY, OF KANSAS CITY, MISSOURI.

SPRAY-HEADER FOB BOILERS. l

Specification of Letters Patent.

. Patented Feb.17,1914.'

Application filed June 4, 1913. Serial No. 771,687.

and useful Improvements in Spray-Headers for Boilers, of which the following is a specification.

This invention relates to boilers and more particularly to a spray header for directing the water supplied to the boiler upon a circumscribed surface thereof whereby to guard against the generation of steam with suflicient rapidity in the event the boiler is empty, but hot, to endanger the boiler.

A further object is to produce means for so controlling the generation of steam as to guard against the production of a greater volume thereof than a single safety or relief valve is capable of accommodating.

With these general objects in view the invention consists in certain novel and peculiar features of construction and organization as hereinafter described and claimed; and in order that it may be fully understood reference is to be had to the accompanying drawing, in which Figure 1, is a side elevation, with the lower part in central vertical section, of a boiler embodying my invention, in the form of a coffee urn. Fig. 2, is a horizontal section on the line IIII of Fig. 3. Fig. 8,

is a central, vertical section taken through the spray header, the bottom of the boiler and the adjacent portion of the water sup- P P P In the said drawlng, 1 indicates a boller,

.such as a coffee urn, provided with a discharge pipe 2, equipped with a safety or relief valve 3, shown in elevation as the detail construction of the same is of no importance because common and well known.

4 is a water supply pipe controlled bya flange 6, sloping downwardly and'outwardly as shown in Fig. 3. Above the flange the tubular portion has-lateral openings 7 and overlying the apertured end of the tube is a hemispherical or equivalent hood 8, the same belng of greater diameter than the flange 6 and terminating a short distance above the bottom of the boiler so that water supplied by plpe 4 shall be caused to flow downwardly and outwardly and come in contact with the bottom of the boiler adjacent to and concentrically around the flange. If desired the spray header may be made in two parts as shown, the perforated portlonv 5 having a top portlon 9 through which a screw 10 may extend to engage the hood and thus clamp the latter firmly in place. v

\ The boiler may be heated in any suitable manner, for instance by a burner 11.

The object of this invention is to guard against danger of generating steam at such rapidity and in such volume as to endanger the boiler at times when it is desired to feed water thereto after the boiler has become practically empty. The spray header accomplishes this purpose in that it deflects the water downward and outward in the form of a ring upon the bottom of the boiler and thus effects the more gradual conversion of a small quantity of water into steam as distinguished from a construction which permits a large quantity of water to enter the boiler before it is fully converted into steam. In the former construction the pressure and volume of steam generated can be taken care of by a single relief valve, whereas with the other construction, the sudden generation of a relatively large volume of water into steam produces such a high pressure that an ordi-,

nary relief valve cannot take care of it and from'this cause the boiler is apt to burst.

I claim:

1. A spray header for boilers comprising a water inlet member having a tubular shank for fitting through an opening in the boiler and also a skeleton frame portion providing a series of lateral openings, and a hood member detachably mounted on said frame and extending into position to deflect downward the water entering. said lateral openings.

2. A spray header for boilers, comprising a water inlet member having a tubular shank for fitting through an opening in the boiler and alsoa skeleton frame portion having a flange for fitting around said opening inside the boiler, said frame comprising a set of spaced legs extending Vertically upward from the flange portion, a disk carried by the upper ends of said legs, a hood member mounted on said skeleton frame and extending into position to deflect downward the water entering said lateral openings, and a bolt for detachably securing said hood memher to said disk.

In testimony whereof, I afix my signa- ,ture, in the presence of two witnesses.

HENRY D. KELLY. Witnesses:

H. O. RODGERS, G. Y. THORPE. 

